A member asked:

I took a mouth swab for work came back positive for meth and amp i cant believe it i dont use drugs i take medication and use vicks inhaler alot my medication i take is bupropion and phenylephrine?

A doctor has provided 1 answer
Dr. Silviu Pasniciuc answered

Specializes in Internal Medicine

Phenylephrine is known to cause false positives for amphetamine due to similar structures. Depending on the context you had the test done for, a confirmation test might be needed.

Answered 11/7/2022

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